English — Forum #647 (Page 3/34)

1. Key knowledge points of atmospheric distillation columns and vacuum distillation columns - HCBBS Forum
2. Is the gas phase the one that comes out of the bottom reboiler in the wastewater stripping tower within the DMTO unit? - HCBBS Forum
3. What are the causes of severe corrosion on the tray plates of the water wash tower in DuPont’s alkylation unit, and what are the preventive measures? Thank you - HCBBS Forum
4. Regarding the tower issue, please help out - HCBBS Forum
5. Regarding the issue of excessive thrust bending moment at the top outlet of the stripping tower - HCBBS Forum
6. If the temperature at the bottom of the vacuum tower is above 380°C and the liquid level in the tower bottom rises, could this have an impact on the vacuum level at the top of the tower? Why? - HCBBS Forum
7. How to determine the temperatures at various points in a vacuum distillation tower? - HCBBS Forum
8. Could that expert please help by providing the process flow from the outlet of the vaporization furnace to the outlet of the water washing tower? - HCBBS Forum
9. Issues related to flooding in distillation columns - HCBBS Forum
10. Packed tower calculation - HCBBS Forum
11. The discharge pipeline of the ammonia purification tower gets clogged frequently - HCBBS Forum
12. Upstream column fluctuations in the fractionation tower - HCBBS Forum
13. How to deal with air leakage from the exhaust hole on the flange surface adjacent to the tower in a distillation tower manhole? - HCBBS Forum
14. The principle and structure of the packed tower can be understood at a glance! - HCBBS Forum
15. Dear acid enthusiasts, what do you think is an appropriate concentration of acid in the drying tower? Please share your opinions - HCBBS Forum
16. Several questions regarding the radfrac of distillation columns - HCBBS Forum
17. Please check whether the heat balance of this distillation column is correct - HCBBS Forum
18. Trays in the desulfurization tower - HCBBS Forum
19. Why is the temperature of the rich amine liquid sent out from the desulfurization tower in the hydrogenation unit about 5 degrees higher than that of the lean amine liquid? - HCBBS Forum
20. 【Purchase Request】Ethylene, hydrogen, nitrogen, hexane, dehydrating and deoxygenating purification tower equipment - HCBBS Forum
21. The separation of n-butane and isobutane in the isomerization deisobutanization column, as well as the changes in column top temperature and pressure and the operating conditions. - HCBBS Forum
22. Issues with the feed inlet of the distillation column reflux tank - HCBBS Forum
23. Can paralleling a plate and frame filter press on the tower tank of a gas cooling tower alleviate blockage on the acid side of the plate exchanger? - HCBBS Forum
24. There’s a problem with the wash tower in Aspen; I need experts to help solve it - HCBBS Forum
25. Calculation of methanol synthesis tower - HCBBS Forum
26. Simulate an absorption tower to absorb ammonia from the air using water - HCBBS Forum
27. Design intention of DN25 pipelines installed outside the bubble layer of the three-stage sulfuric acid drying tower - HCBBS Forum
28. Does the temperature of the distillation column body exhibit a temperature gradient, and does the pressure of the column body also exhibit a pressure gradient? What to do if separation cannot be achieved? - HCBBS Forum
29. Regarding tower distillation, what are the advantages and disadvantages of reduced pressure, atmospheric pressure, and increased pressure? - HCBBS Forum
30. Calculation of cooling capacity for cooling towers - HCBBS Forum
31. What property methods are used in Aspen to simulate the ethylene oxide aqueous solution purification tower? Is NRTL-RK okay? - HCBBS Forum
32. Deethanizer tower - HCBBS Forum
33. Disadvantages of converting a hydrocarbonation tower into a methanation tower - HCBBS Forum
34. Calculation of distillation column bottom discharge - HCBBS Forum
35. Problem of stable tower top cold reflux - HCBBS Forum
36. 【Daily Question】Chemical Engineering Principles 544: Distillation Column Design (April 1) - HCBBS Forum
37. Packing tower, packing support grid - HCBBS Forum
38. What happens when the liquid distribution holes in the CO2 stripping tower become clogged? - HCBBS Forum
39. The impact of water in catalytic crude gasoline on the operation of the absorption tower - HCBBS Forum
40. Handbook for the Design and Selection of Petrochemical Equipment – Columns - HCBBS Forum
41. The feed gas at the bottom of the tower enters in a zigzag pattern through the pipeline - HCBBS Forum
42. Catalytic stabilizer tower - HCBBS Forum
43. Fractionation tower reaction depth - HCBBS Forum
44. Can a stripping tower with side lines be used for extractive distillation? - HCBBS Forum
45. The purity of the product at the top of the gas separation tower is decreasing, and repeated adjustments have not been effective - HCBBS Forum
46. Southeast’s top scorer scores 25 points; the ‘Miracle Team’ records 7 consecutive wins with a double-double and 4 rebounds - HCBBS Forum
47. Regarding the issue with the nozzles of the high-tower granulator, - HCBBS Forum
48. The regeneration purge time of the hydrogen adsorption tower is too long - HCBBS Forum
49. Urgent help: Reasons for the increase in pH value in Tower 1IC and the measures taken. - HCBBS Forum
50. Synthesis tower drum - HCBBS Forum
51. Seek a simulation example (template) for a mixed-structure absorption tower (tray + packing) - HCBBS Forum
52. Distillation column separation problem - HCBBS Forum
53. Regarding tower equipment with ear-seat support for hanging floor slabs - HCBBS Forum
54. Horizontal measurement for tray installation - HCBBS Forum
55. If steam supply to the distillation tower is suddenly stopped, does the operating equation for the distillation section change? - HCBBS Forum
56. Catalytic stabilizer pressure - HCBBS Forum
57. Is there a liquid accumulation tray at the extraction tray location in the first catalytic cracking fractionation column? - HCBBS Forum
58. Distillation tower throughput - HCBBS Forum
59. The Pelicans score 63 points in both games but suffer two consecutive losses; the Wizards advance thanks to their two star players - HCBBS Forum
60. Distillation column reflux calculation - HCBBS Forum
61. La Liga – Suárez scores twice, Messi provides two assists; Barcelona takes a 2-2 lead only for Celta to equalize - HCBBS Forum
62. Hydrogen sulfide absorption tower - HCBBS Forum
63. What are the reasons for nitrogen blockage in the crude argon column and the methods for operational adjustments? Do anyone have any suggestions? - HCBBS Forum
64. The role of the vapor-phase equilibrium line in a distillation column - HCBBS Forum
65. Please advise on reflux ratio of distillation tower - HCBBS Forum
66. Feed rate of the exhaust gas absorption tower - HCBBS Forum
67. Where does the water injected at the top of the atmospheric pressure unit go? - HCBBS Forum
68. Regarding the issue of inverted temperature in the absorption tower - HCBBS Forum
69. Effect of feed composition changes on column temperature - HCBBS Forum
70. Seeking domestic manufacturers specializing in the design and production of distillation columns for the separation of aniline and mixed diamines - HCBBS Forum
71. Regarding the issue of corrosion inhibitors in hydrogen sulfide removal stripping towers - HCBBS Forum
72. What material should be used for the MDEA solvent regeneration tower? Can carbon steel be used? - HCBBS Forum
73. How to use the inspection port of the methanol synthesis tower? - HCBBS Forum
74. Design of tray plates and their support rings - HCBBS Forum
75. The renovation project of the granulation tower for nitro compound fertilizers at Shandong HeliTai Chemical successfully passed the environmental protection inspection - HCBBS Forum
76. Heat bypass pressure of the stabilizer tower - HCBBS Forum
77. Dangers of high liquid temperature in the stripping tower - HCBBS Forum
78. Seeking advice on simulating distillation columns using Aspen Plus - HCBBS Forum
79. Fractionator operation - HCBBS Forum
80. Batch distillation in the tower bottom - HCBBS Forum
81. Tower equipment - HCBBS Forum
82. Preventive measures for tower crane safety accidents - HCBBS Forum
83. Who has the drawings for 1.5 million tons of coking desulfurization equipment, high-tower regeneration? - HCBBS Forum
84. Alcohol double-effect distillation: Some problems have arisen in the first distillation column; seeking help from experts - HCBBS Forum
85. Is the bottom temperature of the depropanization column the same as the extraction temperature at the column bottom? Is there a problem with the reboiler? - HCBBS Forum
86. Fractionating tower problem - HCBBS Forum
87. When performing distillation design, how are the pressure of the top condenser and the pressure drop across the trays entered? - HCBBS Forum
88. On the design of low-temperature methanol scrubbers - HCBBS Forum
89. [Discussion Thread 53] Structure and function of the spiral turbulators installed in tower-type containers - HCBBS Forum
90. Regarding the desulfurization towers used in flue gas desulfurization, which standards do everyone refer to? - HCBBS Forum
91. What is the typical air outlet temperature of an air-cooled tower? - HCBBS Forum
92. Why is only one circulation acid pump provided for each of the three absorption towers? - HCBBS Forum
93. Why do some bottom towers prefer to use built-in heat exchangers - HCBBS Forum
94. Material selection for recovery towers - HCBBS Forum
95. Please tell me how to deal with the failure of the reflux pump at the top of the fractionation tower. - HCBBS Forum
96. Selection issue for scrubber towers - HCBBS Forum
97. Oil in the dry gas stream of the catalytic reabsorption tower - HCBBS Forum
98. Spray drying tower design manufacturers? - HCBBS Forum
99. Treatment of exhaust gases generated by the spray tower - HCBBS Forum
100. The stripping tower, the largest and heaviest equipment in the Zhejiang petrochemical project, has been successfully hoisted into place - HCBBS Forum